Popcorn je v kelímku.

Czech does not have articles like English a/an and the.

So Popcorn je v kelímku can mean:

• The popcorn is in the cup/container
• Popcorn is in a cup/container

Which one is meant depends on context.

Je means is.

It is the 3rd person singular form of the verb být = to be.

So:

• Popcorn = popcorn
• je = is
• v kelímku = in the cup/container

Because the preposition v meaning in normally requires the locative case when it shows location.

The basic dictionary form is:

• kelímek = cup, small container, tub

But after v, it changes to the locative singular:

• v kelímku = in the cup/container

So this is a case ending change:

• nominative: kelímek
• locative: kelímku

Kelímek usually means a small cup, plastic cup, tub, or small container.

It is often used for things like:

• a yogurt cup
• a dessert cup
• a popcorn container
• a small disposable cup

So in this sentence, v kelímku is something like in the cup, in the tub, or in the container, depending on the situation.

It is a borrowed word from English, but it is commonly used in Czech.

In Czech, popcorn is treated as a noun, usually masculine inanimate. In this sentence it stays in its basic form because it is the subject.

So yes, it is normal Czech usage.

In Czech, popcorn is usually treated as a singular mass noun here, so the verb is singular:

• Popcorn je ... = Popcorn is ...

Even though popcorn consists of many pieces, the word is being treated like a substance or mass, not as individual countable items.

Yes, absolutely.

Czech word order is more flexible than English. Both of these are grammatical:

• Popcorn je v kelímku.
• V kelímku je popcorn.

The difference is mainly in emphasis:

• Popcorn je v kelímku. → neutral, simple statement
• V kelímku je popcorn. → emphasizes the location, like The popcorn is in the cup

Je is pronounced roughly like yeh.

The j in Czech is pronounced like English y in yes.

So:

• je ≈ yeh

A simple approximate pronunciation is:

Popcorn je v kelímku
≈ POP-korn yeh f keh-LEEM-koo

A few notes:

• j = English y
• v is often pronounced close to f before a voiceless consonant like k
• stress in Czech is usually on the first syllable of each word:
  • POPcorn
  • je
  • v kelímku

Both v and ve mean in.

Ve is used when pronunciation is easier with an extra vowel, especially before difficult consonant clusters.

Here, v kelímku is easy to say, so plain v is normal.

Examples:

• v kelímku = in the cup
• ve škole = in the school

So ve is not a different meaning—just a pronunciation-friendly variant.

Yes, it is natural and correct.

It is a simple descriptive sentence: Popcorn is in the container/cup.

Depending on context, a Czech speaker might also say something more specific, such as:

• Popcorn je v misce. = The popcorn is in a bowl.
• Popcorn je v krabici. = The popcorn is in a box.
• Popcorn je v kelímku. = The popcorn is in a cup/tub/container.

So the sentence sounds fine, especially if the popcorn is in a small container.